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SUMMARY:Active matter under control: Insights from Response Theory - Luke 
  Davis (University College London)
DTSTART:20231103T150000Z
DTEND:20231103T160000Z
UID:TALK207883@talks.cam.ac.uk
DESCRIPTION:Active constituents burn fuel to sustain individual motion\, g
 iving rise to collective effects that are not seen in systems at thermal e
 quilibrium\, such as phase separation with purely repulsive interactions. 
 There is a great potential in harnessing the striking phenomenology of act
 ive matter to build novel controllable and responsive materials that surpa
 ss passive ones. Yet\, we currently lack a systematic roadmap to predict t
 he protocols driving active systems between different states in a way that
  is thermodynamically optimal. Equilibrium thermodynamics is an inadequate
  foundation to this end\, due to the dissipation rate arising from the con
 stant fuel consumption in active matter. In this talk I will explain the m
 ajor points deriving and implementing our versatile framework for the ther
 modynamic control of active matter. Combining recent developments in stoch
 astic thermodynamics and nonequilibrium response theory\, our approach sho
 ws how to find the optimal control for either continuous- or discrete-stat
 e active systems operating arbitrarily far from equilibrium. Our results o
 pen the door to designing novel active materials which are not only built 
 to stabilize specific nonequilibrium collective states\, but are also opti
 mized to switch between different states at minimum dissipation.
LOCATION:Seminar Room 2\, Newton Institute
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